How to assign column value to a variable within mySQL script ?












0















I have the following script but it returns null all the time.



    SELECT 
@PRICE_LARGE_PRICE = PRICE_LARGE_PRICE,
@PRICE_SMALL_PRICE = PRICE_SMALL_PRICE
FROM
prices
WHERE
PRICE_LISTING_ID = 60;

SET @ITEM_PRICE = (CASE Size WHEN GivenLargeSizeName THEN @PRICE_LARGE_PRICE
WHEN GivenSmallSizeName THEN @PRICE_SMALL_PRICE
ELSE null
END);


The issue here is



@PRICE_LARGE_PRICE = PRICE_LARGE_PRICE,
@PRICE_SMALL_PRICE = PRICE_SMALL_PRICE


table returns PRICE_LARGE_PRICE & PRICE_SMALL_PRICE correctly but the assignment does not work. Hence CASE fails.



Any help is appreciated.










share|improve this question



























    0















    I have the following script but it returns null all the time.



        SELECT 
    @PRICE_LARGE_PRICE = PRICE_LARGE_PRICE,
    @PRICE_SMALL_PRICE = PRICE_SMALL_PRICE
    FROM
    prices
    WHERE
    PRICE_LISTING_ID = 60;

    SET @ITEM_PRICE = (CASE Size WHEN GivenLargeSizeName THEN @PRICE_LARGE_PRICE
    WHEN GivenSmallSizeName THEN @PRICE_SMALL_PRICE
    ELSE null
    END);


    The issue here is



    @PRICE_LARGE_PRICE = PRICE_LARGE_PRICE,
    @PRICE_SMALL_PRICE = PRICE_SMALL_PRICE


    table returns PRICE_LARGE_PRICE & PRICE_SMALL_PRICE correctly but the assignment does not work. Hence CASE fails.



    Any help is appreciated.










    share|improve this question

























      0












      0








      0








      I have the following script but it returns null all the time.



          SELECT 
      @PRICE_LARGE_PRICE = PRICE_LARGE_PRICE,
      @PRICE_SMALL_PRICE = PRICE_SMALL_PRICE
      FROM
      prices
      WHERE
      PRICE_LISTING_ID = 60;

      SET @ITEM_PRICE = (CASE Size WHEN GivenLargeSizeName THEN @PRICE_LARGE_PRICE
      WHEN GivenSmallSizeName THEN @PRICE_SMALL_PRICE
      ELSE null
      END);


      The issue here is



      @PRICE_LARGE_PRICE = PRICE_LARGE_PRICE,
      @PRICE_SMALL_PRICE = PRICE_SMALL_PRICE


      table returns PRICE_LARGE_PRICE & PRICE_SMALL_PRICE correctly but the assignment does not work. Hence CASE fails.



      Any help is appreciated.










      share|improve this question














      I have the following script but it returns null all the time.



          SELECT 
      @PRICE_LARGE_PRICE = PRICE_LARGE_PRICE,
      @PRICE_SMALL_PRICE = PRICE_SMALL_PRICE
      FROM
      prices
      WHERE
      PRICE_LISTING_ID = 60;

      SET @ITEM_PRICE = (CASE Size WHEN GivenLargeSizeName THEN @PRICE_LARGE_PRICE
      WHEN GivenSmallSizeName THEN @PRICE_SMALL_PRICE
      ELSE null
      END);


      The issue here is



      @PRICE_LARGE_PRICE = PRICE_LARGE_PRICE,
      @PRICE_SMALL_PRICE = PRICE_SMALL_PRICE


      table returns PRICE_LARGE_PRICE & PRICE_SMALL_PRICE correctly but the assignment does not work. Hence CASE fails.



      Any help is appreciated.







      mysql






      share|improve this question













      share|improve this question











      share|improve this question




      share|improve this question










      asked Nov 20 '18 at 5:41









      PCGPCG

      114211




      114211
























          2 Answers
          2






          active

          oldest

          votes


















          1














          You need to use SELECT ... INTO:



          SELECT PRICE_LARGE_PRICE, PRICE_SMALL_PRICE
          INTO @PRICE_LARGE_PRICE, @PRICE_SMALL_PRICE
          FROM prices
          WHERE PRICE_LISTING_ID = 60;


          Note that you need to ensure that the query only returns one row of data, using LIMIT 1 if necessary.






          share|improve this answer
























          • Thank you. Yes, it always returns one record.listing I'd is primary key. I will check your code tommorow.

            – PCG
            Nov 20 '18 at 6:01



















          0














          SELECT 
          @PRICE_LARGE_PRICE:=PRICE_LARGE_PRICE,
          @PRICE_SMALL_PRICE:=PRICE_SMALL_PRICE
          FROM
          prices
          WHERE
          PRICE_LISTING_ID = 60;


          just add colon before equal sign in mysql






          share|improve this answer


























          • That's cute, I will try that too.

            – PCG
            Nov 21 '18 at 15:52











          Your Answer






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          2 Answers
          2






          active

          oldest

          votes








          2 Answers
          2






          active

          oldest

          votes









          active

          oldest

          votes






          active

          oldest

          votes









          1














          You need to use SELECT ... INTO:



          SELECT PRICE_LARGE_PRICE, PRICE_SMALL_PRICE
          INTO @PRICE_LARGE_PRICE, @PRICE_SMALL_PRICE
          FROM prices
          WHERE PRICE_LISTING_ID = 60;


          Note that you need to ensure that the query only returns one row of data, using LIMIT 1 if necessary.






          share|improve this answer
























          • Thank you. Yes, it always returns one record.listing I'd is primary key. I will check your code tommorow.

            – PCG
            Nov 20 '18 at 6:01
















          1














          You need to use SELECT ... INTO:



          SELECT PRICE_LARGE_PRICE, PRICE_SMALL_PRICE
          INTO @PRICE_LARGE_PRICE, @PRICE_SMALL_PRICE
          FROM prices
          WHERE PRICE_LISTING_ID = 60;


          Note that you need to ensure that the query only returns one row of data, using LIMIT 1 if necessary.






          share|improve this answer
























          • Thank you. Yes, it always returns one record.listing I'd is primary key. I will check your code tommorow.

            – PCG
            Nov 20 '18 at 6:01














          1












          1








          1







          You need to use SELECT ... INTO:



          SELECT PRICE_LARGE_PRICE, PRICE_SMALL_PRICE
          INTO @PRICE_LARGE_PRICE, @PRICE_SMALL_PRICE
          FROM prices
          WHERE PRICE_LISTING_ID = 60;


          Note that you need to ensure that the query only returns one row of data, using LIMIT 1 if necessary.






          share|improve this answer













          You need to use SELECT ... INTO:



          SELECT PRICE_LARGE_PRICE, PRICE_SMALL_PRICE
          INTO @PRICE_LARGE_PRICE, @PRICE_SMALL_PRICE
          FROM prices
          WHERE PRICE_LISTING_ID = 60;


          Note that you need to ensure that the query only returns one row of data, using LIMIT 1 if necessary.







          share|improve this answer












          share|improve this answer



          share|improve this answer










          answered Nov 20 '18 at 5:44









          NickNick

          31.5k121942




          31.5k121942













          • Thank you. Yes, it always returns one record.listing I'd is primary key. I will check your code tommorow.

            – PCG
            Nov 20 '18 at 6:01



















          • Thank you. Yes, it always returns one record.listing I'd is primary key. I will check your code tommorow.

            – PCG
            Nov 20 '18 at 6:01

















          Thank you. Yes, it always returns one record.listing I'd is primary key. I will check your code tommorow.

          – PCG
          Nov 20 '18 at 6:01





          Thank you. Yes, it always returns one record.listing I'd is primary key. I will check your code tommorow.

          – PCG
          Nov 20 '18 at 6:01













          0














          SELECT 
          @PRICE_LARGE_PRICE:=PRICE_LARGE_PRICE,
          @PRICE_SMALL_PRICE:=PRICE_SMALL_PRICE
          FROM
          prices
          WHERE
          PRICE_LISTING_ID = 60;


          just add colon before equal sign in mysql






          share|improve this answer


























          • That's cute, I will try that too.

            – PCG
            Nov 21 '18 at 15:52
















          0














          SELECT 
          @PRICE_LARGE_PRICE:=PRICE_LARGE_PRICE,
          @PRICE_SMALL_PRICE:=PRICE_SMALL_PRICE
          FROM
          prices
          WHERE
          PRICE_LISTING_ID = 60;


          just add colon before equal sign in mysql






          share|improve this answer


























          • That's cute, I will try that too.

            – PCG
            Nov 21 '18 at 15:52














          0












          0








          0







          SELECT 
          @PRICE_LARGE_PRICE:=PRICE_LARGE_PRICE,
          @PRICE_SMALL_PRICE:=PRICE_SMALL_PRICE
          FROM
          prices
          WHERE
          PRICE_LISTING_ID = 60;


          just add colon before equal sign in mysql






          share|improve this answer















          SELECT 
          @PRICE_LARGE_PRICE:=PRICE_LARGE_PRICE,
          @PRICE_SMALL_PRICE:=PRICE_SMALL_PRICE
          FROM
          prices
          WHERE
          PRICE_LISTING_ID = 60;


          just add colon before equal sign in mysql







          share|improve this answer














          share|improve this answer



          share|improve this answer








          edited Nov 21 '18 at 22:15









          Nick

          31.5k121942




          31.5k121942










          answered Nov 20 '18 at 8:54









          p.ganeshp.ganesh

          1124




          1124













          • That's cute, I will try that too.

            – PCG
            Nov 21 '18 at 15:52



















          • That's cute, I will try that too.

            – PCG
            Nov 21 '18 at 15:52

















          That's cute, I will try that too.

          – PCG
          Nov 21 '18 at 15:52





          That's cute, I will try that too.

          – PCG
          Nov 21 '18 at 15:52


















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